Frances Abbott's surprise engagement raised eyebrows across the nation, presumably including those of her staunchly conservative father, former PM Tony Abbott.

The 26-year-old personal trainer boarded an interstate flight to Sydney on Wednesday, where she met her dad for the first time since becoming engaged to Olympic rower Sam Loch after just two weeks of meeting him.

The father-daughter duo, who recently made headlines for their opposing views on same-sex marriage, were snapped taking a walk in their hometown suburb of Forestville in Sydney's north.

"We've just been on a nice walk through the backstreets of Forestville, we talked about all sorts of things, including wedding plans!" 60-year-old Tony responded animatedly.

The former Liberal leader and "No" campaigner reposted the clip on Twitter, writing, "Early morning walk in Forestville with Francie" and tagged a local newspaper.

Loch, 34, did not make the trip to Sydney, opting to stay at home in Melbourne. It's not clear if Tony and his wife Margaret have met their daughter's fiance, however, it didn't stop the former PM from tweeting his support of the new couple.

"Really thrilled at the news of Francie and Sam’s engagement," he wrote, almost 24 hours after Frances made the announcement. "We are very proud of her and the Abbotts are looking forward to welcoming Sam into the family."